Home / 78,175.64-117,262.38-19,011.12

Finding the Fourth Proportional to 78,175.64, 117,262.38 and 19,011.12

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Solution

The fourth proportional to 78,175.64, 117,262.38 and 19,011.12 is: 28,516.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,175.64 : 117,262.38 = 19,011.12 : x
  2. Step 2: Convert to fraction form
    78,175.64/117,262.38 = 19,011.12/x
  3. Step 3: Cross multiply
    78,175.64x = 117,262.38 × 19,011.12
  4. Step 4: Simplify right side
    78,175.64x = 2,229,289,177.67
  5. Step 5: Solve for x
    x = 2,229,289,177.67/78,175.64
  6. Step 6: Final answer
    x = 28,516.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.